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Math Ninja New

Learn strategies that make mental math easier

Each short lesson gives you a practical method, a clear example, and a chance to use it while you play.

Mental math foundations

Build a small set of dependable strategies, then use them while you play.

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Follow the suggested order or open the lesson that helps you right now.

  1. Lesson 1 Add numbers faster with the make 10 strategy A simple way to solve additions such as 8 + 7 without counting one number at a time. Not started
  2. Lesson 2 Solve tricky calculations by rounding to an easier number Numbers such as 18, 29, 39, and 98 are close to round numbers. That makes them easier to work with than they may first appear. Not started
  3. Lesson 3 Turn difficult multiplications into easier ones Halve one number and double the other. The numbers change, but the answer stays the same. Not started
  4. Lesson 4 Use the 10 times table to solve the 9 times table Multiply by 10, then subtract one group of the number you are multiplying. Not started
  5. Lesson 5 Solve larger exact divisions by splitting them into easy parts Turn one difficult division into two smaller calculations you can solve in your head. Not started

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